Many people believe that Jesus came as a peacemaker, but he did not come to bring peace, he came to bring division. Luke 12:51: “Do you think I came to bring peace on earth? No, I tell you, but division.”
The gospel itself is offensive. To tell someone that they will never be good enough to enter heaven by themselves is a hard truth. But the truth nonetheless. That is why we point them and tell the about what Christ did for us on that cross. The message of being saved by grace in controversial. Many people don’t like the idea of not being able to earn something. But Galatians 2:8-9 tells us that we can’t be saved by works and only by the grace of God can we be saved.
Jesus was by no means a peace keeper. He stirred up the religious elite. He called them out for the fakes that they were. When he saw the temple being used poorly he turned the tables over. He called the Pharisees a brood of vipers. Jesus spoke the truth and the whole truth. He took upon a tax collector as a disciple (the Jews hated tax collectors).
The God of the Old Testament is the same God in the New Testament. As the wars were fought in the OT that brought about the sanctification for his people, the wars that were fought in the OT were against groups of people who did heinous things. The war that was in the New Testament was a spiritual one. Jesus came to divide the Christians and the posers. Although a physical battle was not waged during Jesus’ time on earth there was a battle being fought, resulting in the wrongful murder of Jesus from Nazareth, The Creator of the Universe.